84506720 has 24 divisors (see below), whose sum is σ = 199647504. Its totient is φ = 33802624.

The previous prime is 84506687. The next prime is 84506729. The reversal of 84506720 is 2760548.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84506729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263924 + ... + 264243.

It is an arithmetic number, because the mean of its divisors is an integer number (8318646).

Almost surely, 2^84506720 is an apocalyptic number.

84506720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84506720 is an abundant number, since it is smaller than the sum of its proper divisors (115140784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84506720 is a wasteful number, since it uses less digits than its factorization.

84506720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528182 (or 528174 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 84506720 is about 9192.7536679713. The cubic root of 84506720 is about 438.8307800604.

The spelling of 84506720 in words is "eighty-four million, five hundred six thousand, seven hundred twenty".